From owner-freebsd-hackers Thu Jan 2 18:13:18 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id SAA22176 for hackers-outgoing; Thu, 2 Jan 1997 18:13:18 -0800 (PST) Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id SAA22170 for ; Thu, 2 Jan 1997 18:13:14 -0800 (PST) Received: (from msmith@localhost) by genesis.atrad.adelaide.edu.au (8.8.2/8.7.3) id MAA18262; Fri, 3 Jan 1997 12:42:36 +1030 (CST) From: Michael Smith Message-Id: <199701030212.MAA18262@genesis.atrad.adelaide.edu.au> Subject: Re: CPU fan detection... In-Reply-To: <3.0.1.32.19970102200622.00699f64@bugs.us.dell.com> from Tony Overfield at "Jan 2, 97 08:06:31 pm" To: tony@dell.com (Tony Overfield) Date: Fri, 3 Jan 1997 12:42:35 +1030 (CST) Cc: msmith@atrad.adelaide.edu.au, freebsd-hackers@freefall.freebsd.org X-Mailer: ELM [version 2.4ME+ PL28 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Tony Overfield stands accused of saying: > At 11:48 AM 1/3/97 +1030, Michael Smith wrote: > >Just to change the subject slightly... > > > >The Intel CPUs with integrated fans do indeed have a fan sensor of some > >sort. Anyone know how to read it? It'd make for a good idle-loop > >check... > > The Intel 486->Pentium Overdrive CPU, with the integrated fan, will disable > the internal clock multiplier when the fan stops. You could check to see > if your 100 MHz CPU suddenly seems to be running at only 33 MHz. I have one of these, which comes with a utility to monitor the fan. You're suggesting that this just checks the CPU speed? Ick, forget I mentioned it. I thought that the other integrated-fan CPUs had more than two contacts on the fan connector & thus probably had a status bit somewhere for the fan... -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[